How far is Warrenton, MO from Saint Peters, MO?
The driving distance from Warrenton, MO to Saint Peters, MO is about 29.7 miles (47.8 km), with a travel time of about 00h 28m by car.
- The straight-line flight distance is about 27.7 miles (44.6 km).
- For a round trip, plan for roughly 00h 57m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 28m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
A city in St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Partly Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Warrenton and Saint Peters.
Turn-by-Turn Driving Directions
Step-by-step road directions between Warrenton and Saint Peters.
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1
Start on East Booneslick Road
7 m · 4 sec · East Booneslick Road
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2
Turn right
1.2 km · 2 min
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3
Take the ramp right toward I 70 East, US 40 East: Saint Louis, Wright City
1046 ft · 22 sec
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4
Merge slight left
28.2 mi · 37 min
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5
Take the exit slight right toward Mid Rivers Mall Drive
889 ft · 19 sec
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6
Keep slight left to continue on Mid Rivers Mall Drive
63 m · 4 sec
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7
Turn straight onto Mid Rivers Mall Drive
61 m · 6 sec · Mid Rivers Mall Drive
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8
Take the ramp straight toward I 70 West: Wentzville
1419 ft · 20 sec
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9
Merge slight left
146 m · 7 sec
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10
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Warrenton and Saint Peters.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
I 70 East
Merge slight left
28.2 mi · 00h 37m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny leaving Warrenton and Partly Sunny then Slight Chance Rain Showers near Saint Peters.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Warrenton to Saint Peters?
The road trip is about 29.7 miles (47.8 km) and usually takes 00h 28m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Wentzville is a useful midpoint, sitting about 14.9 miles from Warrenton and 14.9 miles from Saint Peters.
How much longer is the road route than the straight-line distance?
The direct path is about 27.7 miles (44.6 km), while the road route adds roughly 2 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:32 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.96 one way or $7.92 round trip. Estimated CO2 is about 9.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Warrenton and Partly Sunny then Slight Chance Rain Showers near Saint Peters.
Stop Ideas Near Wentzville
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Park
Warrenton City Animal Control
City of O'Fallon
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Wentzville.
Washington
Kirkwood
Hermann
Gateway Transportation Center
Flight Path Map
This map shows the direct air route between Warrenton and Saint Peters. Straight-line distance: 27.74 mi (44.65 km).
#1 Warrenton
City in Warren County, Missouri, United States
| Population | 8,913 |
| Coordinates | 38.8114400, -91.1415400 |
| Altitude | 270 |
| Country | United States |
#2 Saint Peters
The most populous city in St.
| Population | 58,043 |
| Coordinates | 38.8003300, -90.6265100 |
| Altitude | 134 |
| Country | United States |
End: I 70 West (-90.626511, 38.800311)
Estimated Travel Time
Distance: 48 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 59m |
| 40 mph (64.37 km/h) | 00h 44m |
| 50 mph (80.47 km/h) | 00h 35m |
| 60 mph (96.56 km/h) | 00h 29m |
| 70 mph (112.65 km/h) | 00h 25m |
| 80 mph (129 km/h) | 00h 22m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $3.96 | $7.92 |
| Mid-grade | $4.25 | $4.47 | $8.93 |
| Premium | $4.65 | $4.89 | $9.77 |
| Diesel | $5.30 | $5.57 | $11.14 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Missouri · Apr 26, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.